Solana Yellowstone gRPC: リアルタイムデータストリーミング

import Client, { CommitmentLevel, SubscribeRequest } from "@triton-one/yellowstone-grpc";

const client = new Client("your-grpc-endpoint", "your-api-token", {
  "grpc.max_receive_message_length": 64 * 1024 * 1024
});

const stream = await client.subscribe();

// Handle incoming data
stream.on("data", (data) => {
  if (data.transaction) {
    console.log(`Transaction: ${data.transaction.signature}`);
    console.log(`Success: ${!data.transaction.meta?.err}`);
  }
});

// Subscribe to transactions with complete request structure
const subscribeRequest: SubscribeRequest = {
  transactions: {
    client: {
      accountInclude: [
        "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA", // Token Program
        "11111111111111111111111111111111"               // System Program
      ],
      accountExclude: [],
      accountRequired: [],
      vote: false,
      failed: false
    }
  },
  commitment: CommitmentLevel.CONFIRMED,
  ping: { id: 1 }
};

stream.write(subscribeRequest);